I'll admit I used to be. In fact, I made sure all Macs got dumped from our church (they were old anyway). But later found that I was anti-Mac evangelist. What I mean is that I ran into people who were quite passionate about Macs, but those particular people could not promote it w/o constantly insulting me (and those people were christians!).
Like many I did not use a Mac because it meant replacing what we already had (expensive hardware and software). I try to get people involved and try to teach them basic video editing (and other tech related things). But you know it's really hard to do if I have a Mac, and they do not.
Anyway, I got interested in Macs only after I started playing with one. We now use a mix of PCs and Macs that co-exist. Some software is only available on a PC. And some (like the iDVD) are only available on a Mac. Out of 200 church members, 5 of us have Macs. We need tech volunteers. If we use one platform, we shut out people on the other.
Use a MacPro desktop and you're set for whatever environment you want (mac or pc).
God bless, and Happy computing.